Back then those things could be had for a song and a dance. It would be like collecting black Nikon F's today; not a terribly huge investment. But things in Leica Land sure have appreciated a lot in the last twenty years. I guess the is a good thing, Leica rangefinders are popular, ultimately means Leica is still in business. They haven't gone the way of the Contax/Contarex. As for the R system ...
Do you know the name of the collector? Just curious.